Concrete form structure



Dec. 1, 1964 C. W. ALMGREN CONCRETE FORM STRUCTURE 2 Sheets-Sheet 1 Filed Feb. 14; 1962 me an 27 INVENTOR (47/ Mil 2317672 2,? ATTORNEYS Dec. 1, 1964 c. w. ALMGREN CONCRETE FORM STRUCTURE 2 Sheets-Sheet 2 Filed Feb. 14, 1962 INVENTOR. far/ ix/flflgaraz a ATTORNEYS 3,158fiid Ice l atented Dec- 1954 3,158,918 CJNQRETE PERM STRUCTURE tCarl W. Almgren, Chicago, ill, assignor to Marsh 1 Truman Lumber (Zornpauy, Chicago, Ill, a corporation of lllhrois Filed Feb. 14, 1962, dar. No. 173,242 2. Qlaims. (Cl. 2513l) This invention relates to improvements in concrete form structures and has more particular ref rence to improved means for rigldifying the form structures.

A principal object of the invention is to provide an improved concrete form structure ri idified in a simple and efiicient manner.

Another object of the present invention is to provide an improved form of sectional concrete form structure rigidlfied so it may readily be installed in placed by a crane and the like.

A further object oi the invention is to provide a simplificd form of rigidifying means for concrete form structures, constructed With a view toward utmost sirn it in construction and efficiency in rigidirying concrete forms.

A still further object of the invention is to provide a simplified form of bracket for carr *ing a waler reeniorcing a concrete form structure.

These and other objects of the invention will appear from time to time as the following specification proceeds and with reference to the accompanying drawings where- FIGURE 1 is a front view of one form of rigidifying structure for a concrete form structure constructed in accordance with the invention, showing the rigidiiying structure connected to a concrete form panel;

FIG RE 2 is a transverse sectional view taken subster aliy along line i l-11 of FZGURE 1;

FIGURE 3 is a front view of a modified form of concrete form structure and rigidifying means therefor constructed in accordance with the present invention;

FZGURE 4 is a fragmentary sectional view taken subially along line 1V lV of FIGURE 3;

FlGURE 5 is a top plan view of a waler bracket that be used to support the rigidifying waler timbers; and

F16 RE 6 is an enlarged detail sectional view taken substantially along line VI-Vl of FIGURE 5.

in the embodiment of the invention illustrated in FIG- B l and 2 or" the drawings, I have shown a fragment of a wooden panel is"; of a concrete form structure. The L 13 may be made from p ywood and is shown as backed up by rigidir'ying members 11 spaced horizontally along the panel 19 at preselected intervals. in

r "tmcting a form, the panels are soaced apart a distance substantially equal to the width of the wall to be poured and are connected together as by tie rods 12, which also serve as uniform spacers for the panels.

The rigidiiying structure ll as shown in FZGURE l comprises a vertical channel 15 extending for substantially the height of the panel and having a web 16 abutting the panel ill and flanges 17 extending outwardly along opposite sides of said web. Arially aligned cross channels 18, iii are shown as extending from opposite sides of the channel 15, intermediate the ends thereof and as being welded or otherwise secured thereto. The channel 15 is shown as being drilled in alignment with the cross channels l3, 18 to accommodate a tie rod 12, spacing e panels 1t it apart, to pass theretbrough and to retain the stiffening structure to the outside of the panel.

The upper end portions of the ilanges 17 of the channel 15 are cut away to accommodate the web 16 to be bent outwardly therefrom. The portion of the web of the channel extending above the cut away portions of the flanges 17 is shown in FIGURE 2 as being bent outward- 1y at right angles to the web of the channel and then up wardly to form a retainer bracket 19 supporting a waler timber 2% extending horizontally along the upper end portion of the panel lb, and forming a detachable rcenforcing means therefor.

The rigiditying structure 11 may be spaced along the panel 18 on 24 inch centers, or on any other require centers, to form a simple rigidifying means for the associated panel 19 md 21 support for a waler timber extending along the top of the panel.

In the form of the invention illustrated in FIGURES 3 through 6, I have shown a modified form of rigidifying means particularly adapted for large forms and so rigidifying the forms that they may readily be handled and put in place by a crane. This form of the invention is particularly adapted for large section forms as, for example, a by foot section. A form panel 23, which may be made from plywood may be nailed to a series of horizontally spaced studs 24, which may be spaced apart on two foot or 18 inch centers and may extend substantially the height of the plywood panel 23.

Vertically spaced horizontally extending rigidifying members or waler timbers 25 are then shown as being placed horizontally against the outer surfaces of the studs 24. The waler timbers 25 are secured to the studs 24 at the crossing points of said rigidifying members to said studs as by spaced brackets 27, secured to certain of the studs and projecting outwardly therefrom.

As shown in FlGUR -S 5 and 6, each waler bracket 2! includes a U-shaped section 28, having legs 29 which extend along opposite sides of an associated stud 24. A through bolt 3b extends through aligned apertured portions 31 of the legs 2? and through an associated stud 24, and is tightened into engagement with the legs of said U-shaped section as by a nut 33. A leg 35 of the waler support extends along the inside of the web of the U shaped section 28 and is welded or otherwise secured thereto. The leg 35 terminates at its upper end into an outwardly extending horizontal support portion 36 extending outwardly of the stud 24, and having an upwardly turned retainer portion 37 spaced from a stud 24, to which the bracket is attached in parallel relation with respect thereto, a distance sufiicient to form a relatively snug retainer or bracket for waler timber 25, which may be a four-by-four timber.

With the form assembled with the waler timbers supported in the brackets 27, the form may be lifted by a crane and placed in position in parallel relation with respect to another similar form. The two forms may then be tied together by the tie rods 39 spacing the forms apart and also forming a means to hold waler timber support brackets 4b in position to further stiffen the form structure. The waler timber support brackets 44 are held in position on the ends of the tie rods 39 by nuts 41 threaded thereon, and extend outwardly of the studs 24 and form support means for waler timbers 45, extending horizontally along the outsides of the studs 24, between the timbers 25.

The tie rods 39 and waler timber support brackets 4b may be a form of tie rod and bracket in commercial use and known as Allenform ply-tie and Allenform Holder and are of themselves no part of the present invention except insofar as they space the form structures to the required spacing and stiffen the form structures by holding the waler timbers to extend along the backs of the studs 24, so need not herein be shown or described further.

It may be seen from the foregoing that a rugged one piece form has been provided which may readily be as sembled and placed in position by a crane and the like, and that the simplicity and ruggedness of the form is attained by the use of the particular brackets of applicants r 3: invention, enabling the cross beams to readily be put in position to stiflen the form structure with a minimum of delay, and sufiiciently stiffening the form structure so it may be placed in position by a crane.

' While I have herein shown and described one form in which my invention may be embodied, it may readily be understood that various modifications and variations in the invention may be attained without departing from the spirit and scope of the novel concepts thereof as defined by the claims appended hereto. I claim as my invention: 1. The combination with a concrete form structure having upright wall panels,

means for rigidifying said wall panels comprising a series of cross likemetal rigidifying members including channel-like vertical strips and axially aligned channel-like horizontal strips extending from opposite sides of said vertical strips intermediate the ends thereof,

and tie rod means extending through said channel-like vertical strips and connected between said wall panels and spacing said panels apart and holding said rigidifying strips in direct engagement with said panels,

said vertical strips having upper end portions bent outwardly of the panel and extending upwardly therefrom in spaced relation With respect thereto, and forming waler timber brackets supporting Waler timbers in direct engagement with said panels and thereby rigidifying the upper, end portions of the panels.

j 2.. A rigidifying member for concrete form structures and the like comprising a' metal cross-like member having a vertical channel-like rigidifying member having a Web and flanges extending along opposite sides of said web,

' the web of which is adapted to lie along a form panel,

4 the flanges of the channel being cut away along the upper end portion thereof, the portion of the web adjacent the cut away portions of the flanges being bent outwardly at right angles to the web and then upwardly in parallel relation to the web to form a waler timber bracket supporting a waler timber in direct engagement With a form panel,

the web having an apertured portion intermediate the ends thereof to receive a tie rod extending between spaced panels,

and two aligned channel-like horizontally extending rigidifying members extending from opposite sides of the vertical channel in the region of the apertured portion thereof.

References Cited in the file of this patent UNITED STATES PATENTS 955,304 Babel Apr. 19, 1910 958,419 Mowat May 17, 1910 1,190,740 Ellert July 11, 1916 1,212,211 Halgren Jan. 16, 1917 2,055,977 Hayes Sept. 29, 1936 2,298,837 Oswald Oct. 13, 1942 2,312,983 Summers Mar. 2, 1943 2,340,439 Stroben Feb. 1, 1944 2,518,847 Youngman Aug. 15, 1950 2,632,228 Huntington Mar. 24, 1953 2,637,889 Dulleck May 12, 1953 2,657,448 Faye Nov. 3', 1953' 2,689,101 Dygert Sept. 14, 1954 2,952,060 Allen Sept. 13, 1960 3,035,321 Hennig May 22, 1962 

1. THE COMBINATION WITH A CONCRETE FORM STRUCTURE HAVING UPRIGHT WALL PANELS, MEANS FOR RIGIDIFYING SAID WALL PANELS COMPRISING A SERIES OF CROSS LIKE METAL RIGIDIFYING MEMBERS INCLUDING CHANNEL-LIKE VERTICAL STRIPS AND AXIALLY ALIGNED CHANNEL-LIKE HORIZONTAL STRIPS EXTENDING FROM OPPOSITE SIDES OF SAID VERTICAL STRIPS INTERMEDIATE THE ENDS THEREOF, AND TIE ROD MEANS EXTENDING THROUGH SAID CHANNEL-LIKE VERTICAL STRIPS AND CONNECTED BETWEEN SAID WALL PANELS AND SPACING SAID PANELS APART AND HOLDING SAID RIGIDIFYING STRIPS IN DIRECT ENGAGEMENT WITH SAID PANELS, SAID VERTICAL STRIPS HAVING UPPER END PORTIONS BENT OUTWARDLY OF THE PANEL AND EXTENDING UPWARDLY THEREFROM IN SPACED RELATION WITH RESPECT THERETO, AND FORMING WALER TIMBER BRACKETS SUPPORTING WALER TIMBERS IN DIRECT ENGAGEMENT WITH SAID PANELS AND THEREBY RIGIDIFYING THE UPPER END PORTIONS OF THE PANELS. 